Solange Allegedly Attacks Jay Z in Video

Solange Knowles apparently attacked Jay Z in an elevator after a Met Gala after-party last week. In new video footage posted by TMZ, the "Losing You" singer appears to confront her brother-in-law inside the elevator. The exchange escalates as she begins to hit him. Beyonce's bodyguard tries to restrain her, but the two trade words and Solange kicks Jay Z. Beyonce appears to be talking to both of them. At one point, she stands in front of Solange.

In another video, the three are seen getting off the elevator to a swarm of a press after the alleged altercation. Solange and Beyonce get into one car, while Jay Z walks into a nearby SUV.

Moments earlier, Beyonce and Solange were all smiles while taking photos with the likes of Erykah Badu and Lupita Nyong'o at the after-party, held at the swanky Standard Hotel in New York City.

In a statement to The Grio, the Standard Hotel says, "We are shocked and disappointed that there was a clear breach of our security system and the confidentiality that we count on providing our guests.

The hotel says it is "investigating with the utmost urgency the circumstances surrounding the situation and, as is our customary practice, will discipline and prosecute the individuals involved to our fullest capacity.”